Hybrid tea rose plant named ‘Meirecrom’

ABSTRACT

A new and distinct variety of Hybrid Tea rose plant is provided which forms attractive double blossoms that are tangerine in coloration and are borne on very long thick stems. Such blossoms possess no fragrance. The plant exhibits an erect growth habit, dark green and semi-glossy foliage, and good disease resistance. The buds are large and well turbinated. The new variety is particularly well suited for producing cut flowers under greenhouse growing conditions.

SUMMARY OF THE INVENTION

The new variety of (Rosa hybrida) Hybrid Tea rose plant was created byartificial pollination wherein two parents were crossed which previouslyhad been studied in the hope that they would contribute the desiredcharacteristics. The female parent (i.e., the seed parent) of the newvariety was the product of the cross of the ‘Jacgold’ variety (U.S.Plant Pat. No. 5,121) and the ‘Keizoubo’ variety (U.S. Plant Pat. No.8,024). The male parent (i.e., the pollen parent) was the product of thecross of the ‘Meijason’ variety (U.S. Plant Pat. No. 5,622) and the‘Rinakor’ variety (non-patented in the United States). The parentage ofthe new variety can be summarized as follows:

(‘Jacgold’×‘Keizoubo’)×(‘Meijason’×‘Rinakor’).

The seeds resulting from the above pollination were sown and smallplants were obtained which were physically and biologically differentfrom each other. Selective study resulted in the identitication of asingle plant of the new variety.

It was found that the new variety of Hybrid Tea rose plant of thepresent invention possesses the following combination ofcharacteristics:

(a) Forms large floral buds that are well turbinated,

(b) Forms attractive double blossoms that are tangerine in colorationand are borne on very long and thick stems,

(c) Exhibits an erect growth habit, and

(d) Is particularly well suited for the production of cut flowers undergreenhouse growing conditions.

The blossom coloration is tangerine and slightly orange-red on theinside petal margins of the new blooms.

The new variety of the present invention readily can be distinguishedfrom its ancestors. More specifically, the ‘Jacgold’ variety exhibitsyellow blossom petals, the ‘Keizoubo’ variety forms larger buds, the‘Meijason’ variety exhibits pale cream blossom petals, and the ‘Rinakor’variety exhibits orange blossom petals with a yellow base and smallerbuds.

The new variety well meets the needs of the horticultural industry andexhibits good productivity during cut flower production in a greenhouse.

The new variety has been found to undergo asexual propagation in Franceby a number of routes, including budding, grafting, and cuttage. Asexualpropagation by the above-mentioned techniques in France has shown thatthe characteristics of the new variety are stable and are strictlytransmissible by such asexual propagation from one generation toanother.

The new variety has been named the ‘Meirecrom’ variety.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph shows as nearly true as it is reasonablypossible to make the same, in a color illustration of this character,typical specimens of the plant parts of the new variety. The rose plantsof the new variety were two years of age and were observed during Aprilwhile budded on Rosa indica understock and growing in greenhouses at LeCannet des Maures, Var, France. Dimensions in centimeters are indicatedat the bottom of the photograph.

FIG. 1—illustrates a specimen of a young shoot;

FIG. 2—illustrates a specimen of a floral bud before the opening of thesepals;

FIG. 3—illustrates a specimen of a floral bud at the opening of thesepals;

FIG. 4—illustrates a specimen of a floral bud at the opening of thepetals;

FIG. 5—illustrates a specimen of a flower in the course of opening;

FIG. 6—illustrates a specimen of an open flower—plan view—obverse;

FIG. 7—illustrates a specimen of an open flower—plan view—reverse;

FIG. 8—illustrates a specimen of a fully open flower—plan view—obverse;

FIG. 9—illustrates a specimen of a fully open flower—plan view—reverse;

FIG. 10—illustrates a specimen of a floral receptacle showing thearrangement of the stamens and pistils;

FIG. 11—illustrates a specimen of a floral receptacle showing thearrangement of the pistils (stamens removed);

FIG. 12—illustrates a specimen of a flowering stem;

FIG. 13—illustrates a specimen of a main branch;

FIG. 14—illustrates a specimen of a leaf with three leaflets—planview—upper surface; and

FIG. 15—illustrates a specimen of a leaf with five leaflets—planview—under surface.

DETAILED DESCRIPTION

The chart used in the identification of the colors is that of The RoyalHorticultural Society (R.H.S. Colour Chart). The description is based onthe observation of two year-old plants during April while budded on Rosaindica understock and growing indoors at Le Cannet des Maures, Var,France. The coloration in common terms precedes reference to the chartin some instances.

Class: Hybrid Tea.

Plant:

Height.—When pruned to a height of 85 cm., floral stems of approximately80 to 120 cm. in length commonly are produced.

Habit.—Erect.

Branches:

Color.—Young stems: Near Yellow-Green Group 146A. Adult wood: Near GreenGroup 137C.

Thorns.—Size: Medium (as illustrated). Quantity: Medium (asillustrated). Color: Greyed-Orange Group 165B and 165C.

Leaves:

Stipules.—Adnate, pectinate, and rather wide.

Petioles.—Upper surface: Somewhat glandular in nature. Under surface:Commonly with a few glandular edges.

Leaflets.—Number: 3, 5, and 7 (most often). Shape: Generally ellipticwith a cuspidate tip and, with a rounded base. The terminal leafletcommonly is approximately 5 to 7 cm. in length. Serration: Single andregular (as illustrated). Texture: Normal. General appearance: Dense,medium green, and semi-glossy. Color (young foliage): Upper surface:Near Yellow-Green Group 147A. Under surface: Near Green Group 137C, andstained with reddish coloration. Color (adult foliage): Upper surface:Dark green, near Green Group 138A. Under surface: Near Greyed-GreenGroup 191A.

Inflorescence:

Number of flowers.—Usually one flower per stem.

Peduncle.—Thick, long, Green Group 143A in coloration, and the length isapproximately 11 to 12 cm. on average.

Sepals.—Upper surface: Greenish in coloration, Green Group 138A and138B. Under surface: Light green in coloration, Green Group 143A, andcommonly with extensions (as illustrated). Commonly the extensions areweak and are present on two or three of the sepals.

Buds.—Shape: Conical. Size: Large. Length: Approximately 6 cm. onaverage. Color upon opening: Upper surface: Orange-Red Group 30C. Undersurface: Near Yellow-Orange Group 22C and lightly edged with Orange-RedGroup 32B.

Flower.—Shape: With a high center. Diameter: Commonly approximately 14cm. on average. Color (when opening begins): Upper surface: Near OrangeGroup 25B and suffused with Orange-Red Group 31A at the petal margin.Under surface: Near Yellow-Orange Group 22C and bordered with OrangeGroup 25B. Color (when blooming): Upper surface: Near Orange Group 25Bsuffused with Orange Group 28B. Under surface: Near Yellow-Orange Group22C and bordered with Orange Group 29A. Color (at end of opennig): Uppersurface: Near Orange Group 29A suffused with Orange-Red Group 31B. Undersurface: Near Yellow-Orange Group 22D and darker at the petal margin.Fragrance: None. Lasting quality: Approximately 10 to 12 days on theplant and approximately 8 to 10 days when cut and placed in a vase.Petal number: Commonly approximately 36 on average. Petal shape:Rounded. Petal drop: Very good, the petals commonly detach cleanly.Stamen number: Approximately 150 on average. Anthers: Yellow incoloration. Filaments: Orange yellow in coloration. Pistils:Approximately 230 on average. Stigmas: Light yellow in coloration.Styles: Pinkish white in coloration. Receptacle: Light green incoloration, smooth, and in longitudinal section in the shape of apitcher. Hips: Round hips are formed.

Development:

Vegetation.—Strong.

Blooming .—Abundant.

Resistance to diseases.—Very good with respect to Botrytis, PowderyMildew, and Downy Mildew.

Productivity.—Commonly produces approximately 120 to 150 flowers persquare meter per year under greenhouse growing conditions.

I claim:
 1. A new and distinct variety of Hybrid Tea rose plantcharacterized by the following combination of characteristics: (a) formslarge floral buds that are well turbinated, (b) forms attractive doubleblossoms that are tangerine in coloration and are borne on very long andthick stems, (c) exhibits an erect growth habit, and (d) is particularlywell suited for the production of cut flowers under greenhouse growingconditions; substantially as herein shown and described.